You are better off buying the vouchers through Connections. You can try them out and quit if it's not going to be worth it to you, for 30 days for $1. While a few have had problems with them, most have not. I have been a member twice and had no problems. Use a credit card instead of a debit card to reduce the possibility of problems.
On eBay, the price for some reason goes way beyond what they are usually worth. I love them, and we do well with them, but unless you have a car and plan on eating out with the Q & C vouchers at Peppermill or Beaches (the biggest savings), they save you some if you buy direct, but usually nothing if you buy from eBay's inflated prices. The lunch voucher also save you some (mostly at Rain Forest, AK only), but if you usually don't spend that much on a lunch, it's not a savings. Most of hte ones on eBay tell about Beaches Kitchen sink (see it in my signature)..but the new Q & C exclude it, and personally I think it's just a mess of ice cream and toppings.